Bregalad (Quickbeam) was a relatively young Ent at the time of the War of the ring roughly "middle aged" and not nearly as old as Treebeard (though he was a full adult; there had been no Ent children since the disappearance of the Entwives). He guarded Rowan trees, and as such he resembled a rowan himself. He was one of Skinbark's people and as such made his home on the mountain-slopes west of Isengard until Orcs cut down that forest, then he moved to an ent-house near Derndingle in Fangorn forest.
At the Entmoot, Bregalad lived up to his reputation for hastiness; he was the first to decide to attack Isengard, since Saurman's orcs had destroyed many of his rowan groves. Seeing that Bregalad's mind was already made up, Treebeard sent him to watch over Meriadoc Brandybuck and Peregrin took while the debate among the other Ents continued. He sang and laughed with the Hobbits they stayed at his ent-house near Derndingle where the Entmoot was held.
Bregalad later played an important role in the attack on Isengard nearly capturing Saruman himself. After the flooding of Isengard he stood guard at the foot of the stairs of Orthanc